How do you define political extremists?

KEITH Newbery chose to use a pejorative term ‘political extremists’ in his column.

How, I wonder, would he define the term political extremist? Presumably someone with whom he doesn’t agree.

If that is the case, I would consider David Cameron and the members of his (non-elected) government to be political extremists.

Douglas Glossop,

Scott Street, Bognor Regis